參數(shù)資料
型號(hào): EVAL-AD7791EBZ
廠商: Analog Devices Inc
文件頁數(shù): 20/20頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD7791
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 24
采樣率(每秒): 120
數(shù)據(jù)接口: SPI?、QSPI?、MICROWIRE? 和 DSP
工作溫度: -40°C ~ 105°C
已用 IC / 零件: AD7791
已供物品:
Data Sheet
AD7791
Rev. A | Page 9 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
04227-0-012
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
40
80
20
60
100
120
140
dB
160
0
FREQUENCY (Hz)
Figure 6. Frequency Response with 16.6 Hz Update Rate
04227-0-010
0
20
8388591
OCCURENCE
8388619
40
60
80
100
CODE
VDD = 3V
VREF = 2.048V
9.5Hz UPDATE RATE
TA = 25°C
RMS NOISE = 1
V
Figure 7. Noise Distribution Histogram
(CDIV1 = CDIV0 = 0)
04227-0-011
8388591
0
200
400
600
800
CODE
1000
8388619
READ NO.
VDD = 3V, VREF = 2.048V, 9.5Hz UPDATE RATE
TA = 25°C, RMS NOISE = 1V
Figure 8. Typical Noise Plot with 16.6 Hz Update Rate
(CDIV1 = CDIV0 = 0)
04227-0-014
0
1
2
3
4
5
6
7
8
8388592
OCCURENCE
8388616
9
CODE
VDD = 3V
VREF = 2.048V
1.1875Hz UPDATE RATE
TA = 25°C
RMS NOISE = 1.25
F
Figure 9. Noise Histogram for Clock Divide by 8 Mode
(CDIV0 = CDIV1 = 1)
04227-0-013
8388592
0
20
40
60
80
CODE
100
8388616
READ NO.
VDD = 3V, VREF = 2.048V
1.1875Hz UPDATE RATE
TA = 25°C, RMS NOISE = 1.25F
Figure 10. Noise Plot in Clock Divide by 8 Mode
(CDIV0 = CDIV1 = 1)
04227-0-015
0
0.5
1.0
1.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
RMS
NOISE
(
V)
5.0
3.0
2.5
2.0
VREF (V)
VDD = 5V
UPDATE RATE = 16.6Hz
TA = 25°C
Figure 11. RMS Noise vs. Reference Voltage
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